I'm a collector, always have been and always will be. Thankfully, I'm much smarter about how I organize and store my supplies than I was as a kid. Effective organization and storage solutions can make you a more efficient and productive scrapbooker as well as keep your supplies in good condition.
About once a year I go through my stash of stickers and die cuts and purge my collection of items I will never use. The first time I did this it was painful but every time since it has been easier. My kids eagerly anticipate purge day as they wind up with more great stickers and die cuts to add to their own collections. It's a win-win situation: I keep only the stickers and die cuts I will actually use, and my kids stop hounding me for fodder for their projects.
Once you've whittled your collection down to just the pieces you want to keep, pare it down a bit more. Trim around stickers and separate preprinted die cuts from their sheets. Not only does this save storage space, but it's also easier to move the trimmed sticker or die cut around on your layout as you test different page arrangements.
HINT: An inexpensive accordion file folder becomes a compact, portable storage system for stickers. We filled the front pouches in this one with alphabet stickers and the back section with themed sheets.